The 2022 High-energy Outburst and Radio Disappearing Act of the Magnetar 1E 1547.0–5408

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dc.citation.articleNumber153en_US
dc.citation.journalTitleThe Astrophysical Journalen_US
dc.citation.volumeNumber945en_US
dc.contributor.authorLower, Marcus E.en_US
dc.contributor.authorYounes, Georgeen_US
dc.contributor.authorScholz, Paulen_US
dc.contributor.authorCamilo, Fernandoen_US
dc.contributor.authorDunn, Liamen_US
dc.contributor.authorJohnston, Simonen_US
dc.contributor.authorEnoto, Teruakien_US
dc.contributor.authorSarkissian, John M.en_US
dc.contributor.authorReynolds, John E.en_US
dc.contributor.authorPalmer, David M.en_US
dc.contributor.authorArzoumanian, Zavenen_US
dc.contributor.authorBaring, Matthew G.en_US
dc.contributor.authorGendreau, Keithen_US
dc.contributor.authorGöğüş, Ersinen_US
dc.contributor.authorGuillot, Sebastienen_US
dc.contributor.authorHorst, Alexander J. van deren_US
dc.contributor.authorHu, Chin-Pingen_US
dc.contributor.authorKouveliotou, Chryssaen_US
dc.contributor.authorLin, Linen_US
dc.contributor.authorMalacaria, Christianen_US
dc.contributor.authorStewart, Rachaelen_US
dc.contributor.authorWadiasingh, Zorawaren_US
dc.date.accessioned2023-04-25T14:47:50Zen_US
dc.date.available2023-04-25T14:47:50Zen_US
dc.date.issued2023en_US
dc.description.abstractWe report the radio and high-energy properties of a new outburst from the radio-loud magnetar 1E 1547.0−5408. Following the detection of a short burst from the source with Swift-BAT on 2022 April 7, observations by NICER detected an increased flux peaking at (6.0 ± 0.4) × 10−11 erg s−1 cm−2 in the soft X-ray band, falling to a baseline level of 1.7 × 10−11 erg s−1 cm−2 over a 17 day period. Joint spectroscopic measurements by NICER and NuSTAR indicated no change in the hard nonthermal tail despite the prominent increase in soft X-rays. Observations at radio wavelengths with Murriyang, the 64 m Parkes radio telescope, revealed that the persistent radio emission from the magnetar disappeared at least 22 days prior to the initial Swift-BAT detection and was redetected two weeks later. Such behavior is unprecedented in a radio-loud magnetar, and may point to an unnoticed slow rise in the high-energy activity prior to the detected short bursts. Finally, our combined radio and X-ray timing revealed the outburst coincided with a spin-up glitch, where the spin frequency and spin-down rate increased by 0.2 ± 0.1 μHz and (−2.4 ± 0.1) × 10−12 s−2, respectively. A linear increase in the spin-down rate of (−2.0 ± 0.1) × 10−19 s−3 was also observed over 147 days of postoutburst timing. Our results suggest that the outburst may have been associated with a reconfiguration of the quasi-polar field lines, likely signaling a changing twist, accompanied by spatially broader heating of the surface and a brief quenching of the radio signal, yet without any measurable impact on the hard X-ray properties.en_US
dc.identifier.citationLower, Marcus E., Younes, George, Scholz, Paul, et al.. "The 2022 High-energy Outburst and Radio Disappearing Act of the Magnetar 1E 1547.0–5408." <i>The Astrophysical Journal,</i> 945, (2023) IOP Publishing: https://doi.org/10.3847/1538-4357/acbc7c.en_US
dc.identifier.digitalLower_2023_ApJ_945_153en_US
dc.identifier.doihttps://doi.org/10.3847/1538-4357/acbc7cen_US
dc.identifier.urihttps://hdl.handle.net/1911/114822en_US
dc.language.isoengen_US
dc.publisherIOP Publishingen_US
dc.rightsOriginal content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.titleThe 2022 High-energy Outburst and Radio Disappearing Act of the Magnetar 1E 1547.0–5408en_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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